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April 19, 2014

Homework Help: TO KIM

Posted by Mallory on Sunday, March 11, 2007 at 5:16pm.

can you help me with this

|2x - 3|^2 - 6|2x - 3| + 5=0

I know you are goood with this stuff


Math question here.

let |2x - 3| = y then you have

y^2 - 6y + 5 = 0
(y-5)(y-1)=0

y = 5 or y = 1

or |2x - 3| = 5 or |2x - 3| = 1


So you have |2x - 3| = 5

giving you:

2x - 3 = 5 or -2x + 3 = 5
2x= 4 -2x = 2
x = 2 x = -1

repeat the same steps with |2x - 3| = 1 for 2 more answers.

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